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Claude Mythos 5.2 vs Nemotron Nano 9B v2

Claude Mythos 5.2 leads the LLM Stats Score 59.6 to 17.8.

Anthropic · NVIDIA · Updated for 2026

Which is better?

Claude Mythos 5.2 leads the overall LLM Stats Score 59.6 to 17.8, ranking #2 overall.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Claude Mythos 5.2

  • overall performance matters — it scores 59.6 and ranks #2 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you want the most recent training data — it shipped Nov 2026

Choose Nemotron Nano 9B v2

  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Claude Mythos 5.2
Anthropic
Nemotron Nano 9B v2
NVIDIA
Core performance indexes
LLM Stats Score
59.6
#2
17.8
#254
Reasoning
53.3
#8
16.6
#252
Coding
45.1
#5
14.3
#166
Cost, coverage & limits
Benchmark wins
—
—
Input price
$8.00 / M
— / M
Output price
$40.00 / M
— / M
Context window
1,000,000
—

Individual benchmarks

9 reported for Claude Mythos 5.2 · 6 for Nemotron Nano 9B v2

No common benchmarks found

Claude Mythos 5.2 and Nemotron Nano 9B v2don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Claude Mythos 5.2 specifies input context (1,000,000 tokens). Only Claude Mythos 5.2 specifies output context (128,000 tokens).

Anthropic
Claude Mythos 5.2
Input1,000,000 tokens
Output128,000 tokens
NVIDIA
Nemotron Nano 9B v2
Input- tokens
Output- tokens
Wed Nov 11 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Claude Mythos 5.2 supports multimodal inputs, whereas Nemotron Nano 9B v2 does not.

Claude Mythos 5.2 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Mythos 5.2

Text
Images
Audio
Video

Nemotron Nano 9B v2

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Mythos 5.2 is licensed under a proprietary license, while Nemotron Nano 9B v2 uses NVIDIA Open Model License Agreement .

License differences may affect how you can use these models in commercial or open-source projects.

Claude Mythos 5.2

Proprietary

Closed source

Nemotron Nano 9B v2

NVIDIA Open Model License Agreement

Open weights

Release Timeline

When each model was launched

Claude Mythos 5.2 was released on 2026-11-09, while Nemotron Nano 9B v2 was released on 2025-08-18.

Claude Mythos 5.2 is 15 months newer than Nemotron Nano 9B v2.

Claude Mythos 5.2

Nov 9, 2026

0 days ago

1.2yr newer
Nemotron Nano 9B v2

Aug 18, 2025

1.2 years ago

Knowledge Cutoff

When training data ends

Claude Mythos 5.2 has a knowledge cutoff of 2026-06-01, while Nemotron Nano 9B v2 has a cutoff of 2024-09-01.

Claude Mythos 5.2 has more recent training data (up to 2026-06-01), making it potentially better informed about events through that date compared to Nemotron Nano 9B v2 (2024-09-01).

Claude Mythos 5.2

Jun 2026

1.8 yr newer
Nemotron Nano 9B v2

Sep 2024

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Claude Mythos 5.2 and Nemotron Nano 9B v2 side-by-side, then vote on the output you prefer.

Claude Mythos 5.2
✓ Preferred
Nemotron Nano 9B v2
Open in Playground

FAQ

Common questions about Claude Mythos 5.2 vs Nemotron Nano 9B v2.

Which is better, Claude Mythos 5.2 or Nemotron Nano 9B v2?

Claude Mythos 5.2 leads the LLM Stats Score 59.6 to 17.8. Claude Mythos 5.2 is made by Anthropic and Nemotron Nano 9B v2 is made by NVIDIA. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Mythos 5.2 compare to Nemotron Nano 9B v2 in benchmarks?

Claude Mythos 5.2 scores De novo protein binder design: 85.1%, Biomedical image analysis: 80.7%, Protocols Troubleshooting: 77.1%, Terminal-Bench-Science 0.1: 75.3%, Terminal-Bench 4.0: 70.5%. Nemotron Nano 9B v2 scores MATH-500: 97.8%, IFEval: 90.3%, AIME 2025: 72.1%, LiveCodeBench: 71.1%, BFCL_v3_MultiTurn: 66.9%.

What are the context window sizes for Claude Mythos 5.2 and Nemotron Nano 9B v2?

Claude Mythos 5.2 supports 1.0M tokens and Nemotron Nano 9B v2 supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Mythos 5.2 and Nemotron Nano 9B v2?

Key differences include LLM Stats Score (59.6 vs 17.8), multimodal support (yes vs no), licensing (Proprietary vs NVIDIA Open Model License Agreement ). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Mythos 5.2 and Nemotron Nano 9B v2?

Claude Mythos 5.2 is developed by Anthropic and Nemotron Nano 9B v2 is developed by NVIDIA.

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